I have a Tartan 3000, I want to install the topping lift but all the hardware has been removed from the end of the boom. I believe there once was a cheek block and a cleat, I'm not sure. Any suggestions on rigging the topping lift? The topping lift is wire with a rope/line attached near the boom.
Since you state; "The topping lift is wire with a rope/line attached near the boom." A common method BYW. I have to assume that you still have that part.
Often, with that type of topping lift the rope portion is run through the boom under a sheave at the aft end and then to the forward end where it exits through a jammer.
You may not have this type of boom however and your idea of a cheek block and cleat is pretty common too.
It is a little more difficult to adjust when the cleat is at the aft end of the boom but that's seldom a problem on smaller boats.